var express = require('express');
var path = require('path');


var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var routes = require('./routes/index');
var users = require('./routes/users');
var session = require('express-session');
var multer  = require('multer');//上传文件
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

// uncomment after placing your favicon in /public
//app.use(favicon(__dirname + '/public/favicon.ico'));
var server = require('http').createServer(app);
var io = require('socket.io').listen(server);
server.listen(3001);
io.sockets.on('connection', function (socket) {
  var session = socket.handshake.session;//session
  var name = '111';
  socket.emit('news', { hello: name });
  socket.on('haha', function (data) {
    socket.emit('nw', { hello: data});
  });
});
//socket.io

app.use(session({
  secret: 'keyboard cat',
  resave: false,
  saveUninitialized: true
}));
//session

app.use(logger('dev'));

app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use(multer({ dest:'./public/upload/',rename: function (fieldname, filename) {
  return filename.replace(/\W+/g, '-').toLowerCase() + Date.now()
}}));//设定上传目录
app.use('/', routes);
app.use('/users', users);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
  app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
      message: err.message,
      error: err
    });
  });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
  res.status(err.status || 500);
  res.render('error', {
    message: err.message,
    error: {}
  });
});


module.exports = app;
